SRAM X4 Rear Derailleur - 7,8,9 Speed, Long Cage, Black

Affordable and reliable derailleur is great for repairs and upgrades. Compatible with 7-, 8-, and 9-speed systems 1:1 shifter-to-derailleur actuation ratio for precise light-action indexing Color: Black Largest Cog: 34 Rear Derailleur Mount Type: 10x1 Standard Chain Wrap Capacity (teeth): 45 Cage Length: Long Rear Der/Shifter Compatibility: SRAM 1:1 Drivetrain Speeds: 7 , 8 , 9 Weight: 280